Carbureter for hydrocarbon-engines.



PATENTED MAY 15, 1906.

. A. A;, F. & G. LONGUEMAREL- GARBURETER FOR HYDROOARBON ENGINES.

APPLIGATION FILED MARA. 1904.

\HHHHH Q UNITED STATES PATENT OFFICE.

AMELIE ADELE LONGUEMARE, FERNAND LONGUEMARE, AND GEORGES LONGUEMARE, OF PARIS, FRANCE; SAID FERNANI) LON GUEMARE AND GEORGES LONGUEMARE ASSIGNORS TO SAID AMELIE ADELE LONGUE- MARE.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed March 4, 1904. Serial No. 196,633.

To all whom it may concern."

Be it known that we, AMELIE ADELE LoN- GUEMARE, FERNAND LONGUEMARE," and GEORGES LONGUEMARE, citizens of the Republic of France, and residents of Paris, France, have invented certain new'and useful Improvements in Carbureters for Hydrocarbon-Engines, of which the following is a s ecification.

his invention relates to an apparatus for the automatic regulation of the total admiss'ion of air to a carbureter, said regulation being such that the o ening of the orifice through which air is dlfawn in by the iston of the en ine is automatically increase or di- Ininished according to the speed of the englne.

The accompanying drawing shows a partial section through the axis of a carbureter provided with this re ulatin device, which chiefly consists of a 1% forming an extension of the orifices b for the admisslon of air into the carburetor. This pipe (1 is fixed in place in any suitable mannersuch as, for instance, by means of a central rod 0, arranged as an extension and below the center of the carbureter. This rod passes through the wall of the casing and receives a nut 01, which holdsthe casing in the desired position.

The horizontal mouth of the casing a is of rectangular, oval, or circular cross-section and is closed by a vertical shutter e hinged at the top at f and preferably provided with a Weight g at the bottom. A screw it forms a stop against which the shutter e strikes when under the influence of its own weight it closes the mouth of the tube a.

When the engine is running slowly, there is only a small suction of air in the tube a, so that the shutter e is opened only to a small extent. The resistance to opening offered by the Weighted shutter e enables a sufficient depression to be roduced in the carbureter in order that t e li uid may be drawn throu h the grooves o the atomizer and a suitable gaseous supply maintained. When, however, the engine 1s running very fast, the depression in the pipe a becomes stronger, and the atmospheric air entering in larger ent tu e or casing a,

quantities through the tube a acts on the shutter e and maintains it open to a greater extent. The degree of'opening of the tube a is thus automatically maintained in proporan angle inclined upwardly and the shutter will be the more strongly closed the greater the gradient. The result will be that the admission of air taking lace with greater difficulty the piston will aw in a mixture richer in hydrocarbon. The reverse will take place when the car is going downhill. In fact, the weight g of the shutter 6 will have the tendency to maintain the shutter slightly open, and consequently will facilitate idle movement of the piston without any effort on the part of the latter during its suction period.

What we claim as our invention, and desire to secure by Letters Patent, is

1. Inan air-regulating device for carbureters for motor-vehicles, an air-inlet conduit for communicating with an air-passage in which the fuel-duct empties, in combination with a free y -suspended flap-valve weighted at its lower end in said conduit adapted to 0 en in the direction of the motion of the ve icle, substantially as set forth. I 2. In an air-regulating device for carbureters for motor-vehicles, an air-inlet conduit for communicating with an air-passage in which the fuel duct empties, in combination with a freely suspended flap valve weighted at its lower end in said conduit adapted to open in the direction of the motion of the vehicle anda valve-stop, substan tially as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses. I

AMELIE ADELE LONGUEMARE. FERNAND LONGUEMARE. GEORGES LONGUEMARE.

Witnesses:

JEAN ROBELET, HANSON O. 001m. 

